MAINTAINERS: Update Cirrus Logic parts to linux-sound mailing list

Now that most kernel work on sound has moved over to the linux-sound
mailing list so should the Cirrus Logic audio parts.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20240807140140.421359-1-ckeepax@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>